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Mirrors > Home > HSE Home > Th. List > occon3 | Structured version Visualization version GIF version |
Description: Hilbert lattice contraposition law. (Contributed by Mario Carneiro, 18-May-2014.) (New usage is discouraged.) |
Ref | Expression |
---|---|
occon3 | ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → (𝐴 ⊆ (⊥‘𝐵) ↔ 𝐵 ⊆ (⊥‘𝐴))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ococss 31322 | . . . 4 ⊢ (𝐵 ⊆ ℋ → 𝐵 ⊆ (⊥‘(⊥‘𝐵))) | |
2 | 1 | adantl 481 | . . 3 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → 𝐵 ⊆ (⊥‘(⊥‘𝐵))) |
3 | ocss 31314 | . . . 4 ⊢ (𝐵 ⊆ ℋ → (⊥‘𝐵) ⊆ ℋ) | |
4 | occon 31316 | . . . 4 ⊢ ((𝐴 ⊆ ℋ ∧ (⊥‘𝐵) ⊆ ℋ) → (𝐴 ⊆ (⊥‘𝐵) → (⊥‘(⊥‘𝐵)) ⊆ (⊥‘𝐴))) | |
5 | 3, 4 | sylan2 593 | . . 3 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → (𝐴 ⊆ (⊥‘𝐵) → (⊥‘(⊥‘𝐵)) ⊆ (⊥‘𝐴))) |
6 | sstr2 4002 | . . 3 ⊢ (𝐵 ⊆ (⊥‘(⊥‘𝐵)) → ((⊥‘(⊥‘𝐵)) ⊆ (⊥‘𝐴) → 𝐵 ⊆ (⊥‘𝐴))) | |
7 | 2, 5, 6 | sylsyld 61 | . 2 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → (𝐴 ⊆ (⊥‘𝐵) → 𝐵 ⊆ (⊥‘𝐴))) |
8 | ococss 31322 | . . . 4 ⊢ (𝐴 ⊆ ℋ → 𝐴 ⊆ (⊥‘(⊥‘𝐴))) | |
9 | 8 | adantr 480 | . . 3 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → 𝐴 ⊆ (⊥‘(⊥‘𝐴))) |
10 | id 22 | . . . 4 ⊢ (𝐵 ⊆ ℋ → 𝐵 ⊆ ℋ) | |
11 | ocss 31314 | . . . 4 ⊢ (𝐴 ⊆ ℋ → (⊥‘𝐴) ⊆ ℋ) | |
12 | occon 31316 | . . . 4 ⊢ ((𝐵 ⊆ ℋ ∧ (⊥‘𝐴) ⊆ ℋ) → (𝐵 ⊆ (⊥‘𝐴) → (⊥‘(⊥‘𝐴)) ⊆ (⊥‘𝐵))) | |
13 | 10, 11, 12 | syl2anr 597 | . . 3 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → (𝐵 ⊆ (⊥‘𝐴) → (⊥‘(⊥‘𝐴)) ⊆ (⊥‘𝐵))) |
14 | sstr2 4002 | . . 3 ⊢ (𝐴 ⊆ (⊥‘(⊥‘𝐴)) → ((⊥‘(⊥‘𝐴)) ⊆ (⊥‘𝐵) → 𝐴 ⊆ (⊥‘𝐵))) | |
15 | 9, 13, 14 | sylsyld 61 | . 2 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → (𝐵 ⊆ (⊥‘𝐴) → 𝐴 ⊆ (⊥‘𝐵))) |
16 | 7, 15 | impbid 212 | 1 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → (𝐴 ⊆ (⊥‘𝐵) ↔ 𝐵 ⊆ (⊥‘𝐴))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ⊆ wss 3963 ‘cfv 6563 ℋchba 30948 ⊥cort 30959 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1908 ax-6 1965 ax-7 2005 ax-8 2108 ax-9 2116 ax-10 2139 ax-11 2155 ax-12 2175 ax-ext 2706 ax-sep 5302 ax-nul 5312 ax-pow 5371 ax-pr 5438 ax-un 7754 ax-resscn 11210 ax-1cn 11211 ax-icn 11212 ax-addcl 11213 ax-addrcl 11214 ax-mulcl 11215 ax-mulrcl 11216 ax-mulcom 11217 ax-addass 11218 ax-mulass 11219 ax-distr 11220 ax-i2m1 11221 ax-1ne0 11222 ax-1rid 11223 ax-rnegex 11224 ax-rrecex 11225 ax-cnre 11226 ax-pre-lttri 11227 ax-pre-lttrn 11228 ax-pre-ltadd 11229 ax-pre-mulgt0 11230 ax-hilex 31028 ax-hfvadd 31029 ax-hv0cl 31032 ax-hfvmul 31034 ax-hvmul0 31039 ax-hfi 31108 ax-his1 31111 ax-his2 31112 ax-his3 31113 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1540 df-fal 1550 df-ex 1777 df-nf 1781 df-sb 2063 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2727 df-clel 2814 df-nfc 2890 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-rmo 3378 df-reu 3379 df-rab 3434 df-v 3480 df-sbc 3792 df-csb 3909 df-dif 3966 df-un 3968 df-in 3970 df-ss 3980 df-nul 4340 df-if 4532 df-pw 4607 df-sn 4632 df-pr 4634 df-op 4638 df-uni 4913 df-iun 4998 df-br 5149 df-opab 5211 df-mpt 5232 df-id 5583 df-po 5597 df-so 5598 df-xp 5695 df-rel 5696 df-cnv 5697 df-co 5698 df-dm 5699 df-rn 5700 df-res 5701 df-ima 5702 df-iota 6516 df-fun 6565 df-fn 6566 df-f 6567 df-f1 6568 df-fo 6569 df-f1o 6570 df-fv 6571 df-riota 7388 df-ov 7434 df-oprab 7435 df-mpo 7436 df-er 8744 df-en 8985 df-dom 8986 df-sdom 8987 df-pnf 11295 df-mnf 11296 df-xr 11297 df-ltxr 11298 df-le 11299 df-sub 11492 df-neg 11493 df-div 11919 df-2 12327 df-cj 15135 df-re 15136 df-im 15137 df-sh 31236 df-oc 31281 |
This theorem is referenced by: chsscon2i 31492 chsscon2 31531 |
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